Calculation vs Dottie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculation
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A simple and free calculator app that anyone can use easily. Fast and accurate calculations with automatically saved calculation history. Perfect for daily use, study, and work with a clean and simple design.
Dottie
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Time, dot by dot. See how far your day, week, month, or year has progressed, and keep track of the moments you’re looking forward to. SEE TIME TAKE SHAPE Watch your day, week, month, and year progress as an animated grid of dots. When the grid is full, celebrate with confetti. YOUR SPECIAL MOMENTS Create countdowns for birthdays, vacations, and special events. Whether it’s a one-time occasion or a yearly celebration, see how much time is left. RIGHT ON YOUR HOME SCREEN Keep time progress and countdowns in view with Dottie’s widgets, without opening the app. YOUR COLORS Choose from solid colors and gradients to make the app and widgets your own. COMPLETELY FREE No ads and no subscription. Your data stays on your device.
Screenshots
Verdict
The clearest difference is ads: Dottie at none against Calculation's shown. Dottie also leads on update cadence (every 9 days vs every 2 months). Calculation's advantage is iOS requirement (16.0 vs 26.1). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Calculation ships an update every 2 months, Dottie every 9 days. The most recent releases landed on September 11, 2026 and September 30, 2026 respectively.
| Parameter | Calculation | Dottie |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 7 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | SooRyong Hyun | Arno Richter |
In-app purchases
Calculation
No in-app purchases
Dottie
No in-app purchases
Questions
Is Calculation free?
Is Dottie free?
Do Calculation or Dottie have ads?
Which is updated more often, Calculation or Dottie?
Other comparisons
